一维浅水流动方程的Godunov格式求解
A Godunov-type scheme for 1-D shallow-water flow with uneven bottom
-
摘要: 以准确Riemann解为基础,建立了求解一维非平底浅水流动方程的Godunov格式,用"水位方程法(WaterLevel Formulation,WLF)"求解Riemann解,结合中心差分和Riemann解离散底坡项,保证了计算格式的和谐性.经算例验证,方法健全、通用,且分辨率高.Abstract: Based on exact the Riemann solution,this paper presents a Godunov-type scheme for 1-D shallow-water equations with uneven bottom.Central difference and the Riemann solution with "water level formulation" are used in the discretisation of the source term to keep the scheme well-balanced.Numerical experiments are presented to demonstrate that the scheme is robust,versatile and high in resolution.